124312021145 has 32 divisors (see below), whose sum is σ = 169139443200. Its totient is φ = 86950174464.

The previous prime is 124312021133. The next prime is 124312021153. The reversal of 124312021145 is 541120213421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 124312021145 - 2⁶ = 124312021081 is a prime.

It is a super-2 number, since 2×124312021145² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9575879 + ... + 9588851.

It is an arithmetic number, because the mean of its divisors is an integer number (5285607600).

Almost surely, 2^124312021145 is an apocalyptic number.

It is an amenable number.

124312021145 is a deficient number, since it is larger than the sum of its proper divisors (44827422055).

124312021145 is a wasteful number, since it uses less digits than its factorization.

124312021145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20769.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 124312021145 its reverse (541120213421), we get a palindrome (665432234566).

The spelling of 124312021145 in words is "one hundred twenty-four billion, three hundred twelve million, twenty-one thousand, one hundred forty-five".